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  <title>Basic SimpleXML usage</title>

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</div><hr /><div id="simplexml.examples-basic" class="section">
  <h2 class="title">Basic SimpleXML usage</h2>
  <p class="para">
   Many examples in this reference require an XML string. Instead of
   repeating this string in every example, we put it into a file which
   we include in each example. This included file is shown in the 
   following example section. Alternatively, you could create an XML
   document and read it with <span class="function"><a href="function.simplexml-load-file.html" class="function">simplexml_load_file()</a></span>.
  </p>
  <p class="para">
   <div class="example" id="example-5365">
    <p><strong>Example #1 Include file example.php with XML string</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$xmlstr&nbsp;</span><span style="color: #007700">=&nbsp;&lt;&lt;&lt;XML<br /></span><span style="color: #DD0000">&lt;?xml&nbsp;version='1.0'&nbsp;standalone='yes'?&gt;<br />&lt;movies&gt;<br />&nbsp;&lt;movie&gt;<br />&nbsp;&nbsp;&lt;title&gt;PHP:&nbsp;Behind&nbsp;the&nbsp;Parser&lt;/title&gt;<br />&nbsp;&nbsp;&lt;characters&gt;<br />&nbsp;&nbsp;&nbsp;&lt;character&gt;<br />&nbsp;&nbsp;&nbsp;&nbsp;&lt;name&gt;Ms.&nbsp;Coder&lt;/name&gt;<br />&nbsp;&nbsp;&nbsp;&nbsp;&lt;actor&gt;Onlivia&nbsp;Actora&lt;/actor&gt;<br />&nbsp;&nbsp;&nbsp;&lt;/character&gt;<br />&nbsp;&nbsp;&nbsp;&lt;character&gt;<br />&nbsp;&nbsp;&nbsp;&nbsp;&lt;name&gt;Mr.&nbsp;Coder&lt;/name&gt;<br />&nbsp;&nbsp;&nbsp;&nbsp;&lt;actor&gt;El&nbsp;Act&amp;#211;r&lt;/actor&gt;<br />&nbsp;&nbsp;&nbsp;&lt;/character&gt;<br />&nbsp;&nbsp;&lt;/characters&gt;<br />&nbsp;&nbsp;&lt;plot&gt;<br />&nbsp;&nbsp;&nbsp;So,&nbsp;this&nbsp;language.&nbsp;It's&nbsp;like,&nbsp;a&nbsp;programming&nbsp;language.&nbsp;Or&nbsp;is&nbsp;it&nbsp;a<br />&nbsp;&nbsp;&nbsp;scripting&nbsp;language?&nbsp;All&nbsp;is&nbsp;revealed&nbsp;in&nbsp;this&nbsp;thrilling&nbsp;horror&nbsp;spoof<br />&nbsp;&nbsp;&nbsp;of&nbsp;a&nbsp;documentary.<br />&nbsp;&nbsp;&lt;/plot&gt;<br />&nbsp;&nbsp;&lt;great-lines&gt;<br />&nbsp;&nbsp;&nbsp;&lt;line&gt;PHP&nbsp;solves&nbsp;all&nbsp;my&nbsp;web&nbsp;problems&lt;/line&gt;<br />&nbsp;&nbsp;&lt;/great-lines&gt;<br />&nbsp;&nbsp;&lt;rating&nbsp;type="thumbs"&gt;7&lt;/rating&gt;<br />&nbsp;&nbsp;&lt;rating&nbsp;type="stars"&gt;5&lt;/rating&gt;<br />&nbsp;&lt;/movie&gt;<br />&lt;/movies&gt;<br /></span><span style="color: #007700">XML;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
  <p class="para">
   The simplicity of SimpleXML appears most clearly when one extracts
   a string or number from a basic XML document.
   <div class="example" id="example-5366">
    <p><strong>Example #2 Getting <em>&lt;plot&gt;</em></strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">include&nbsp;</span><span style="color: #DD0000">'example.php'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$movies&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SimpleXMLElement</span><span style="color: #007700">(</span><span style="color: #0000BB">$xmlstr</span><span style="color: #007700">);<br /><br />echo&nbsp;</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">movie</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-&gt;</span><span style="color: #0000BB">plot</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>

   So, this language. It&#039;s like, a programming language. Or is it a
   scripting language? All is revealed in this thrilling horror spoof
   of a documentary.

</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   Accessing elements within an XML document that contain characters not permitted under 
   PHP&#039;s naming convention (e.g. the hyphen) can be accomplished by encapsulating the
   element name within braces and the apostrophe.
   <div class="example" id="example-5367">
    <p><strong>Example #3 Getting <em>&lt;line&gt;</em></strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">include&nbsp;</span><span style="color: #DD0000">'example.php'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$movies&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SimpleXMLElement</span><span style="color: #007700">(</span><span style="color: #0000BB">$xmlstr</span><span style="color: #007700">);<br /><br />echo&nbsp;</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">movie</span><span style="color: #007700">-&gt;{</span><span style="color: #DD0000">'great-lines'</span><span style="color: #007700">}-&gt;</span><span style="color: #0000BB">line</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
PHP solves all my web problems
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-5368">
    <p><strong>Example #4 Accessing non-unique elements in SimpleXML</strong></p>
    <div class="example-contents"><p>
     When multiple instances of an element exist as children of
     a single parent element, normal iteration techniques apply.
    </p></div>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">include&nbsp;</span><span style="color: #DD0000">'example.php'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$movies&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SimpleXMLElement</span><span style="color: #007700">(</span><span style="color: #0000BB">$xmlstr</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;For&nbsp;each&nbsp;&lt;character&gt;&nbsp;node,&nbsp;we&nbsp;echo&nbsp;a&nbsp;separate&nbsp;&lt;name&gt;.&nbsp;*/<br /></span><span style="color: #007700">foreach&nbsp;(</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">movie</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">characters</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">character&nbsp;</span><span style="color: #007700">as&nbsp;</span><span style="color: #0000BB">$character</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">$character</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">name</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'&nbsp;played&nbsp;by&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$character</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">actor</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Ms. Coder played by Onlivia Actora
Mr. Coder played by El ActÓr
</pre></div>
    </div>
   </div>
  </p>
  <blockquote class="note"><p><strong class="note">Note</strong>: 
   <p class="para">
    Properties (<em>$movies-&gt;movie</em> in previous example) are not
    arrays. They are <a href="class.iterator.html" class="link">iterable</a> and
    <a href="class.arrayaccess.html" class="link">accessible</a> objects.
   </p>
  </p></blockquote>
  <p class="para">
   <div class="example" id="example-5369">
    <p><strong>Example #5 Using attributes</strong></p>
    <div class="example-contents"><p>
     So far, we have only covered the work of reading element names
     and their values. SimpleXML can also access element attributes.
     Access attributes of an element just as you would elements
     of an <span class="type"><a href="language.types.array.html" class="type array">array</a></span>.
    </p></div>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">include&nbsp;</span><span style="color: #DD0000">'example.php'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$movies&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SimpleXMLElement</span><span style="color: #007700">(</span><span style="color: #0000BB">$xmlstr</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Access&nbsp;the&nbsp;&lt;rating&gt;&nbsp;nodes&nbsp;of&nbsp;the&nbsp;first&nbsp;movie.<br />&nbsp;*&nbsp;Output&nbsp;the&nbsp;rating&nbsp;scale,&nbsp;too.&nbsp;*/<br /></span><span style="color: #007700">foreach&nbsp;(</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">movie</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-&gt;</span><span style="color: #0000BB">rating&nbsp;</span><span style="color: #007700">as&nbsp;</span><span style="color: #0000BB">$rating</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;switch((string)&nbsp;</span><span style="color: #0000BB">$rating</span><span style="color: #007700">[</span><span style="color: #DD0000">'type'</span><span style="color: #007700">])&nbsp;{&nbsp;</span><span style="color: #FF8000">//&nbsp;Get&nbsp;attributes&nbsp;as&nbsp;element&nbsp;indices<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">case&nbsp;</span><span style="color: #DD0000">'thumbs'</span><span style="color: #007700">:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">$rating</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'&nbsp;thumbs&nbsp;up'</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br />&nbsp;&nbsp;&nbsp;&nbsp;case&nbsp;</span><span style="color: #DD0000">'stars'</span><span style="color: #007700">:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">$rating</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'&nbsp;stars'</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
7 thumbs up5 stars
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-5370">
    <p><strong>Example #6 Comparing Elements and Attributes with Text</strong></p>
    <div class="example-contents"><p>
     To compare an element or attribute with a string or pass it into a 
     function that requires a string, you must cast it to a string using 
     <em>(string)</em>. Otherwise, PHP treats the element as an object.
    </p></div>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">include&nbsp;</span><span style="color: #DD0000">'example.php'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$movies&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SimpleXMLElement</span><span style="color: #007700">(</span><span style="color: #0000BB">$xmlstr</span><span style="color: #007700">);<br /><br />if&nbsp;((string)&nbsp;</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">movie</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">title&nbsp;</span><span style="color: #007700">==&nbsp;</span><span style="color: #DD0000">'PHP:&nbsp;Behind&nbsp;the&nbsp;Parser'</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;print&nbsp;</span><span style="color: #DD0000">'My&nbsp;favorite&nbsp;movie.'</span><span style="color: #007700">;<br />}<br /><br />echo&nbsp;</span><span style="color: #0000BB">htmlentities</span><span style="color: #007700">((string)&nbsp;</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">movie</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">title</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
My favorite movie.PHP: Behind the Parser
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-5371">
    <p><strong>Example #7 Comparing Two Elements</strong></p>
    <div class="example-contents"><p>
     Two SimpleXMLElements are considered different even if they point to the
     same element since PHP 5.2.0.
    </p></div>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">include&nbsp;</span><span style="color: #DD0000">'example.php'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$movies1&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SimpleXMLElement</span><span style="color: #007700">(</span><span style="color: #0000BB">$xmlstr</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$movies2&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SimpleXMLElement</span><span style="color: #007700">(</span><span style="color: #0000BB">$xmlstr</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$movies1&nbsp;</span><span style="color: #007700">==&nbsp;</span><span style="color: #0000BB">$movies2</span><span style="color: #007700">);&nbsp;</span><span style="color: #FF8000">//&nbsp;false&nbsp;since&nbsp;PHP&nbsp;5.2.0<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
bool(false)
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-5372">
    <p><strong>Example #8 Using XPath</strong></p>
    <div class="example-contents"><p>
     SimpleXML includes built-in <acronym title="XML Path Language">XPath</acronym> support.
     To find all <em>&lt;character&gt;</em> elements:
    </p></div>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">include&nbsp;</span><span style="color: #DD0000">'example.php'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$movies&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SimpleXMLElement</span><span style="color: #007700">(</span><span style="color: #0000BB">$xmlstr</span><span style="color: #007700">);<br /><br />foreach&nbsp;(</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">xpath</span><span style="color: #007700">(</span><span style="color: #DD0000">'//character'</span><span style="color: #007700">)&nbsp;as&nbsp;</span><span style="color: #0000BB">$character</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">$character</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">name</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'played&nbsp;by&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$character</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">actor</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>
     &#039;<em>//</em>&#039; serves as a wildcard. To specify absolute
     paths, omit one of the slashes.
    </p></div>
    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Ms. Coder played by Onlivia Actora
Mr. Coder played by El ActÓr
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-5373">
    <p><strong>Example #9 Setting values</strong></p>
    <div class="example-contents"><p>
     Data in SimpleXML doesn&#039;t have to be constant. The object allows
     for manipulation of all of its elements.
    </p></div>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">include&nbsp;</span><span style="color: #DD0000">'example.php'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$movies&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SimpleXMLElement</span><span style="color: #007700">(</span><span style="color: #0000BB">$xmlstr</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">movie</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-&gt;</span><span style="color: #0000BB">characters</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">character</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-&gt;</span><span style="color: #0000BB">name&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'Miss&nbsp;Coder'</span><span style="color: #007700">;<br /><br />echo&nbsp;</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">asXML</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
&lt;?xml version=&quot;1.0&quot; standalone=&quot;yes&quot;?&gt;
&lt;movies&gt;
 &lt;movie&gt;
  &lt;title&gt;PHP: Behind the Parser&lt;/title&gt;
  &lt;characters&gt;
   &lt;character&gt;
    &lt;name&gt;Miss Coder&lt;/name&gt;
    &lt;actor&gt;Onlivia Actora&lt;/actor&gt;
   &lt;/character&gt;
   &lt;character&gt;
    &lt;name&gt;Mr. Coder&lt;/name&gt;
    &lt;actor&gt;El Act&amp;#xD3;r&lt;/actor&gt;
   &lt;/character&gt;
  &lt;/characters&gt;
  &lt;plot&gt;
   So, this language. It&#039;s like, a programming language. Or is it a
   scripting language? All is revealed in this thrilling horror spoof
   of a documentary.
  &lt;/plot&gt;
  &lt;great-lines&gt;
   &lt;line&gt;PHP solves all my web problems&lt;/line&gt;
  &lt;/great-lines&gt;
  &lt;rating type=&quot;thumbs&quot;&gt;7&lt;/rating&gt;
  &lt;rating type=&quot;stars&quot;&gt;5&lt;/rating&gt;
 &lt;/movie&gt;
&lt;/movies&gt;
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-5374">
    <p><strong>Example #10 Adding elements and attributes</strong></p>
    <div class="example-contents"><p>
     Since PHP 5.1.3, SimpleXML has had the ability to easily add children and
     attributes.
    </p></div>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">include&nbsp;</span><span style="color: #DD0000">'example.php'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$movies&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SimpleXMLElement</span><span style="color: #007700">(</span><span style="color: #0000BB">$xmlstr</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$character&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">movie</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-&gt;</span><span style="color: #0000BB">characters</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">addChild</span><span style="color: #007700">(</span><span style="color: #DD0000">'character'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$character</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">addChild</span><span style="color: #007700">(</span><span style="color: #DD0000">'name'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'Mr.&nbsp;Parser'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$character</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">addChild</span><span style="color: #007700">(</span><span style="color: #DD0000">'actor'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'John&nbsp;Doe'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$rating&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">movie</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-&gt;</span><span style="color: #0000BB">addChild</span><span style="color: #007700">(</span><span style="color: #DD0000">'rating'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'PG'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$rating</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">addAttribute</span><span style="color: #007700">(</span><span style="color: #DD0000">'type'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'mpaa'</span><span style="color: #007700">);<br /><br />echo&nbsp;</span><span style="color: #0000BB">$movies</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">asXML</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
&lt;?xml version=&quot;1.0&quot; standalone=&quot;yes&quot;?&gt;
&lt;movies&gt;
 &lt;movie&gt;
  &lt;title&gt;PHP: Behind the Parser&lt;/title&gt;
  &lt;characters&gt;
   &lt;character&gt;
    &lt;name&gt;Ms. Coder&lt;/name&gt;
    &lt;actor&gt;Onlivia Actora&lt;/actor&gt;
   &lt;/character&gt;
   &lt;character&gt;
    &lt;name&gt;Mr. Coder&lt;/name&gt;
    &lt;actor&gt;El Act&amp;#xD3;r&lt;/actor&gt;
   &lt;/character&gt;
  &lt;character&gt;&lt;name&gt;Mr. Parser&lt;/name&gt;&lt;actor&gt;John Doe&lt;/actor&gt;&lt;/character&gt;&lt;/characters&gt;
  &lt;plot&gt;
   So, this language. It&#039;s like, a programming language. Or is it a
   scripting language? All is revealed in this thrilling horror spoof
   of a documentary.
  &lt;/plot&gt;
  &lt;great-lines&gt;
   &lt;line&gt;PHP solves all my web problems&lt;/line&gt;
  &lt;/great-lines&gt;
  &lt;rating type=&quot;thumbs&quot;&gt;7&lt;/rating&gt;
  &lt;rating type=&quot;stars&quot;&gt;5&lt;/rating&gt;
 &lt;rating type=&quot;mpaa&quot;&gt;PG&lt;/rating&gt;&lt;/movie&gt;
&lt;/movies&gt;
</pre></div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-5375">
    <p><strong>Example #11 DOM Interoperability</strong></p>
    <div class="example-contents"><p>
     PHP has a mechanism to convert XML nodes between SimpleXML
     and DOM formats. This example shows how one might change
     a DOM element to SimpleXML.
    </p></div>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$dom&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">DOMDocument</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$dom</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">loadXML</span><span style="color: #007700">(</span><span style="color: #DD0000">'&lt;books&gt;&lt;book&gt;&lt;title&gt;blah&lt;/title&gt;&lt;/book&gt;&lt;/books&gt;'</span><span style="color: #007700">);<br />if&nbsp;(!</span><span style="color: #0000BB">$dom</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">'Error&nbsp;while&nbsp;parsing&nbsp;the&nbsp;document'</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;exit;<br />}<br /><br /></span><span style="color: #0000BB">$books&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">simplexml_import_dom</span><span style="color: #007700">(</span><span style="color: #0000BB">$dom</span><span style="color: #007700">);<br /><br />echo&nbsp;</span><span style="color: #0000BB">$books</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">book</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]-&gt;</span><span style="color: #0000BB">title</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
blah
</pre></div>
    </div>
   </div>
  </p>
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